Perhaps you should try some spelling variations:
"social antropologia en economia." » "sociales antropologia en economia.", "socio antropologica en economia.", "social anthropology en economia.", "social antropologia del economia.", "social antropologia de economia.", "social antropologia y economia.", "social antropologia una economia.", "social antropologia la economia."
"social antropologia la biologia." » "sociales antropologia la biologia.", "socio antropologica la biologia.", "social anthropology la biologia.", "social antropologia de biologia.", "social antropologia y biologia.", "social antropologia e biologia.", "social antropologia la sociologia."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("social antropologia en economia.") OR ("social antropologia la biologia."))~.
• Removing quotes may allow a broader search: (( social antropologia en economia. ) or ( social antropologia la biologia. ))~.
• Adding a wildcard symbol may retrieve word variants: (("social antropologia en economia.") or ("social antropologia la biologia."))*.